1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2 /* Copyright 2015 Freescale Semiconductor Inc.
3 * Copyright 2018-2019 NXP
4 */
5 #include <linux/module.h>
6 #include <linux/debugfs.h>
7 #include "dpaa2-eth.h"
8 #include "dpaa2-eth-debugfs.h"
9
10 #define DPAA2_ETH_DBG_ROOT "dpaa2-eth"
11
12 static struct dentry *dpaa2_dbg_root;
13
dpaa2_dbg_cpu_show(struct seq_file * file,void * offset)14 static int dpaa2_dbg_cpu_show(struct seq_file *file, void *offset)
15 {
16 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
17 struct rtnl_link_stats64 *stats;
18 struct dpaa2_eth_drv_stats *extras;
19 int i;
20
21 seq_printf(file, "Per-CPU stats for %s\n", priv->net_dev->name);
22 seq_printf(file, "%s%16s%16s%16s%16s%16s%16s%16s%16s%16s\n",
23 "CPU", "Rx", "Rx Err", "Rx SG", "Tx", "Tx Err", "Tx conf",
24 "Tx SG", "Tx converted to SG", "Enq busy");
25
26 for_each_online_cpu(i) {
27 stats = per_cpu_ptr(priv->percpu_stats, i);
28 extras = per_cpu_ptr(priv->percpu_extras, i);
29 seq_printf(file, "%3d%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu\n",
30 i,
31 stats->rx_packets,
32 stats->rx_errors,
33 extras->rx_sg_frames,
34 stats->tx_packets,
35 stats->tx_errors,
36 extras->tx_conf_frames,
37 extras->tx_sg_frames,
38 extras->tx_converted_sg_frames,
39 extras->tx_portal_busy);
40 }
41
42 return 0;
43 }
44
45 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_cpu);
46
fq_type_to_str(struct dpaa2_eth_fq * fq)47 static char *fq_type_to_str(struct dpaa2_eth_fq *fq)
48 {
49 switch (fq->type) {
50 case DPAA2_RX_FQ:
51 return "Rx";
52 case DPAA2_TX_CONF_FQ:
53 return "Tx conf";
54 default:
55 return "N/A";
56 }
57 }
58
dpaa2_dbg_fqs_show(struct seq_file * file,void * offset)59 static int dpaa2_dbg_fqs_show(struct seq_file *file, void *offset)
60 {
61 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
62 struct dpaa2_eth_fq *fq;
63 u32 fcnt, bcnt;
64 int i, err;
65
66 seq_printf(file, "FQ stats for %s:\n", priv->net_dev->name);
67 seq_printf(file, "%s%16s%16s%16s%16s%16s\n",
68 "VFQID", "CPU", "TC", "Type", "Frames", "Pending frames");
69
70 for (i = 0; i < priv->num_fqs; i++) {
71 fq = &priv->fq[i];
72 err = dpaa2_io_query_fq_count(NULL, fq->fqid, &fcnt, &bcnt);
73 if (err)
74 fcnt = 0;
75
76 /* Skip FQs with no traffic */
77 if (!fq->stats.frames && !fcnt)
78 continue;
79
80 seq_printf(file, "%5d%16d%16d%16s%16llu%16u\n",
81 fq->fqid,
82 fq->target_cpu,
83 fq->tc,
84 fq_type_to_str(fq),
85 fq->stats.frames,
86 fcnt);
87 }
88
89 return 0;
90 }
91
92 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_fqs);
93
dpaa2_dbg_ch_show(struct seq_file * file,void * offset)94 static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset)
95 {
96 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
97 struct dpaa2_eth_channel *ch;
98 int i;
99
100 seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name);
101 seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n",
102 "CHID", "CPU", "Deq busy", "Frames", "CDANs",
103 "Avg Frm/CDAN", "Buf count");
104
105 for (i = 0; i < priv->num_channels; i++) {
106 ch = priv->channel[i];
107 seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n",
108 ch->ch_id,
109 ch->nctx.desired_cpu,
110 ch->stats.dequeue_portal_busy,
111 ch->stats.frames,
112 ch->stats.cdan,
113 div64_u64(ch->stats.frames, ch->stats.cdan),
114 ch->buf_count);
115 }
116
117 return 0;
118 }
119
120 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_ch);
121
dpaa2_dbg_add(struct dpaa2_eth_priv * priv)122 void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
123 {
124 struct fsl_mc_device *dpni_dev;
125 struct dentry *dir;
126 char name[10];
127
128 /* Create a directory for the interface */
129 dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent);
130 snprintf(name, 10, "dpni.%d", dpni_dev->obj_desc.id);
131 dir = debugfs_create_dir(name, dpaa2_dbg_root);
132 priv->dbg.dir = dir;
133
134 /* per-cpu stats file */
135 debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_fops);
136
137 /* per-fq stats file */
138 debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fqs_fops);
139
140 /* per-fq stats file */
141 debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_fops);
142 }
143
dpaa2_dbg_remove(struct dpaa2_eth_priv * priv)144 void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
145 {
146 debugfs_remove_recursive(priv->dbg.dir);
147 }
148
dpaa2_eth_dbg_init(void)149 void dpaa2_eth_dbg_init(void)
150 {
151 dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);
152 pr_debug("DPAA2-ETH: debugfs created\n");
153 }
154
dpaa2_eth_dbg_exit(void)155 void dpaa2_eth_dbg_exit(void)
156 {
157 debugfs_remove(dpaa2_dbg_root);
158 }
159